一筐苹果(100个左右)按每份3个分,多1个;每份5个分,多3个;每份7个分,少2个。这筐苹果有多少个?

麻烦用公因数或公倍数解题。一定要对!
2024-11-26 01:37:46
推荐回答(6个)
回答1:

每份3个分,多1个,也可理解为每份3个分,少2个
每份5个分,多3个,也可理解为每份5个分,少2个
每份7个分,少2个
所以苹果数量为3、5、7的公倍数减去2
3×5×7=105,接近100
所以苹果数量为105-2=103个

回答2:

“三人同行七十(70)稀,
五树梅花二一(21)枝。
七子团圆正半月(15),
除百零五(105)便得知。”

回答3:

3,5,7的公倍数是3*5*7=105,105-1-3+2=103.答案是103个。

回答4:

103个....100个左右,所以选90到110之间,别问我为什么选这个区间,因为本能的觉得在这些之间,首先90 93 96 99 102 105 108是3的倍数,95 100 105 110 是5的倍数,91 98 105是7的倍数,去掉这些剩下的就是91 92 94 97 98 99 101 103 104 106 107 109。这个就剩下你自己算了,我是数学小白,只能一个一个的来了,求高手指教

回答5:

3*5*7=105(个)
105+1+3-2=107(个)

回答6:

103

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